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XVIF(4) Device Drivers Manual (xen) XVIF(4)
NAMExvif - Xen backend paravirtualized network interface
SYNOPSISpseudo-devicexvifDESCRIPTION
The xvif interface forms the backend part of the paravirtualized drivers
used by Xen domains to offer network connectivity.
When the guest domain is NetBSD, the endpoint of the xvif interface is a
xennet(4) interface. In the XenStore, xvif and xennet are identified by
"vif" (virtual interface) entries.
All xvif interfaces follow the "xvifXiY" naming convention, where `X'
represents the guest domain identifier, and `Y' an arbitrary identifier;
most of the time, it is the frontend interface identifier, e.g.
"xennetY".
For convenience, the MAC address of an xvif interface is chosen by
incrementing the third byte of the MAC address of the frontend device.
Conceptually, frontends and backends drivers are similar to two Ethernet
cards connected via a crossover cable.
DIAGNOSTICSxvif%di%d:can'tread%s/mac:%d The MAC address for this interface
could not be read from XenStore.
xvif%di%d:%sisnotavalidmacaddress The MAC address specified in
the configuration file of the newly created guest domain is invalid.
xvif%di%d:Ethernetaddress%s MAC address of the xvif interface.
SEEALSOifmedia(4), xennet(4), ifconfig(8)HISTORY
The xvif driver first appeared in NetBSD 4.0.
AUTHORS
The xvif driver was written by Manuel Bouyer <bouyer@NetBSD.org>.
NetBSD 8.0 April 7, 2011 NetBSD 8.0